CN220608757U - Antibacterial medical dressing capable of observing wound condition - Google Patents
Antibacterial medical dressing capable of observing wound condition Download PDFInfo
- Publication number
- CN220608757U CN220608757U CN202321403263.8U CN202321403263U CN220608757U CN 220608757 U CN220608757 U CN 220608757U CN 202321403263 U CN202321403263 U CN 202321403263U CN 220608757 U CN220608757 U CN 220608757U
- Authority
- CN
- China
- Prior art keywords
- layer
- antibacterial
- hydrogel
- antimicrobial
- medical dressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 77
- 239000010410 layer Substances 0.000 claims abstract description 190
- 239000000017 hydrogel Substances 0.000 claims abstract description 102
- 239000011241 protective layer Substances 0.000 claims abstract description 44
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 43
- 239000000499 gel Substances 0.000 claims abstract description 42
- 239000012790 adhesive layer Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000741 silica gel Substances 0.000 claims abstract description 28
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 28
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 12
- 210000000416 exudates and transudate Anatomy 0.000 claims abstract description 11
- 230000000845 anti-microbial effect Effects 0.000 claims description 31
- -1 polyethylene Polymers 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 14
- 230000008093 supporting effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 7
- 239000004945 silicone rubber Substances 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920006264 polyurethane film Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- 239000004599 antimicrobial Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000004831 Hot glue Substances 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 2
- 239000003522 acrylic cement Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000000560 biocompatible material Substances 0.000 claims 1
- 206010052428 Wound Diseases 0.000 description 50
- 208000027418 Wounds and injury Diseases 0.000 description 50
- 238000010521 absorption reaction Methods 0.000 description 8
- 208000004210 Pressure Ulcer Diseases 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- 239000012780 transparent material Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 229960000686 benzalkonium chloride Drugs 0.000 description 4
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 description 4
- 229960003333 chlorhexidine gluconate Drugs 0.000 description 4
- YZIYKJHYYHPJIB-UUPCJSQJSA-N chlorhexidine gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O.C1=CC(Cl)=CC=C1NC(=N)NC(=N)NCCCCCCNC(=N)NC(=N)NC1=CC=C(Cl)C=C1 YZIYKJHYYHPJIB-UUPCJSQJSA-N 0.000 description 4
- 229920002413 Polyhexanide Polymers 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 206010011985 Decubitus ulcer Diseases 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- XENVCRGQTABGKY-ZHACJKMWSA-N chlorohydrin Chemical compound CC#CC#CC#CC#C\C=C\C(Cl)CO XENVCRGQTABGKY-ZHACJKMWSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- CPKVUHPKYQGHMW-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;molecular iodine Chemical compound II.C=CN1CCCC1=O CPKVUHPKYQGHMW-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000222122 Candida albicans Species 0.000 description 1
- 241000194032 Enterococcus faecalis Species 0.000 description 1
- 206010063560 Excessive granulation tissue Diseases 0.000 description 1
- 229920000153 Povidone-iodine Polymers 0.000 description 1
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 206010040830 Skin discomfort Diseases 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 241000191963 Staphylococcus epidermidis Species 0.000 description 1
- 241000193996 Streptococcus pyogenes Species 0.000 description 1
- 206010048038 Wound infection Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229940032049 enterococcus faecalis Drugs 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 210000001126 granulation tissue Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229960001621 povidone-iodine Drugs 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Abstract
The utility model discloses an antibacterial medical dressing capable of observing the condition of a wound, which comprises a protective layer, a silica gel layer, an antibacterial hydrogel layer, an adhesive layer and a transparent film, wherein one surface of the transparent film is attached to the surface of the adhesive layer, which is far away from the wound area; the protective layer of (2) is a removable part, one surface of which is attached to one surface of the silicone gel layer; the silicone gel layer, the antibacterial hydrogel layer, the adhesive layer and the transparent film are made of transparent or visible materials; the antibacterial hydrogel layer is arranged between the other surface of the silica gel layer and the adhesive layer; the silica gel layer is provided with a vent hole; the antibacterial hydrogel layer is connected with the protective layer through the vent holes on the silica gel layer, and the antibacterial hydrogel layer is contacted with the wound area through the vent holes on the silica gel layer after the protective layer is uncovered; the antibacterial hydrogel layer can absorb exudates of the wound; the antibacterial hydrogel layer is an elastic structure layer containing antibacterial agent, and can deform to generate elastic force after being pressed so as to disperse and relieve the pressure of the wound.
Description
Technical Field
The utility model relates to the field of medical dressing, in particular to an antibacterial medical dressing capable of observing wound conditions.
Background
Common medical dressings in the market are opaque, and medical staff cannot directly observe the wound condition, so that the medical staff often need to uncover the dressing for observation. This not only results in pain to the patient, but also affects the rate of wound healing. For this reason, medical dressings made of transparent materials are commercially available for the purpose of enabling real-time observation of wound states. However, this dressing has the following problems during use: due to the material problem, the adhesive on the dressing can adhere to the skin after use, causing skin discomfort; exudates from the wound cannot be absorbed in time by the dressing and thus affect the adhesion of the dressing.
The prior patent CN202222528876.6 discloses a medical dressing capable of observing the condition of a wound, and aims to solve the problems that the dressing is easy to adhere to skin and wound exudates cannot be absorbed in time. However, in practical use, it has further been found that the ability of such dressings to absorb exudates is still further improved and the probability of infection of the wound cannot be effectively reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides the antibacterial medical dressing capable of observing the condition of a wound, which can further improve the absorption capacity of the dressing to wound exudates and has antibacterial performance, so that the occurrence probability of wound infection can be effectively reduced.
Specifically, the antibacterial medical dressing capable of observing the wound condition provided by the utility model adopts the following technical scheme:
the medical dressing capable of observing the condition of the wound comprises a protective layer, a silica gel layer, an antibacterial hydrogel layer, an adhesive layer and a transparent film, wherein one surface of the transparent film is attached to the surface of the adhesive layer, which is far away from the wound area; the protective layer is a removable part, and one surface of the protective layer is attached to one surface of the silica gel layer; the silicone gel layer, the antibacterial hydrogel layer, the adhesive layer and the transparent film are made of transparent or visible materials; the antibacterial hydrogel layer is arranged between the other surface of the silicone gel layer and the adhesive layer; the silica gel layer is provided with a vent hole; the antibacterial hydrogel layer is connected with the protective layer through a vent hole on the silica gel layer, and the antibacterial hydrogel layer is contacted with the wound area through the vent hole on the silica gel layer after the protective layer is uncovered; the antimicrobial hydrogel layer is capable of absorbing exudates from a wound; the antibacterial hydrogel layer is an elastic structure layer containing an antibacterial agent.
The protective layer can protect the sanitation of the silica gel layer and can be easily separated from the silica gel layer.
The adhesive layer is made of a material with biocompatibility, has good biocompatibility and plays a role in adhering raw materials; further, the adhesive layer is used for adhering the antibacterial hydrogel layer and the transparent film.
The transparent layer may protect the dressing and the wound from infection.
The antibacterial hydrogel layer can effectively absorb exudates of a wound and can also keep the moist environment of the wound, wherein the added antibacterial agent can effectively control the microbial load of a wound contact area, so that the construction of a microenvironment for promoting the growth speed of granulation tissues and the healing of the wound surface is facilitated, and the real-time condition of the wound can be directly observed; the antibacterial hydrogel layer can deform to generate elasticity after being pressed so as to disperse and relieve wound pressure, thereby effectively preventing pressure ulcer.
Further, the liquid absorption of the dressing is more than or equal to 5g/100cm 2 。
Further, the water vapor transmittance of the dressing is more than or equal to 300g/m 2 *24h, can guarantee the good air permeability of dressing.
Further, the sterilization rate of the dressing is between 90% and 99.9999%.
Further, the dressing may have different shapes and sizes depending on the location of the wound in which it is ultimately to be used; the final product is shaped to fit the position and shape of the wound, and can be heart-shaped, round, oval, triangular or rectangular. For example, when the dressing is used on a wound in the caudal vertebral region, the dressing is preferably heart-shaped in shape.
Further, the antibacterial agent may be one or more of chlorhexidine gluconate (CHG), polyhexamethylene chloride (PHMB), benzalkonium chloride (BZK), povidone-iodine, or silver particles.
Further, the antibacterial agent may be added by surface coating after hydrogel molding or directly during hydrogel molding.
Wherein the antimicrobial hydrogel layer has liquid absorption; further, the antibacterial hydrogel layer contains a polymer having liquid absorption properties.
Further, the antibacterial hydrogel layer is coated with a layer of super absorbent resin. The super absorbent resin has super water absorption, and can greatly improve the absorption performance of the antibacterial hydrogel layer on wound exudates.
Further, the antibacterial hydrogel layer is provided with a supporting layer at one side far away from the silica gel layer, and the supporting layer can support the curing and forming of the antibacterial hydrogel; preferably, in the preparation process of the dressing, a layer of liquid hydrogel is coated on the supporting layer, and the liquid hydrogel is cured and formed under the supporting action of the supporting layer. Preferably, the supporting layer may be a transparent polyurethane film, a non-woven fabric, a woven or knitted net film, or other transparent or semitransparent material capable of supporting hydrogel curing.
Preferably, the thickness of the antibacterial hydrogel layer is between 0.8 and 5mm, and the water content of the antibacterial hydrogel layer is between 10 and 90%. The thickness and moisture content are effective to disperse and relieve wound pressure. At a fixed or specific pressure, the contact pressure can be reduced by more than 40%.
Preferably, the ventilation holes in the silicone gel layer may be the same or different sizes. The atmospheric pores are arranged in the contact area of the silica gel layer and the antibacterial hydrogel layer so as to ensure the absorption capacity and the air permeability of the antibacterial hydrogel layer to wound exudates; the small air holes are formed in the application edge area of the silica gel layer, so that the application property of the dressing is improved, the problems of edge warping and difficult adhesion in the use process are prevented, and the use comfort of a patient is improved. The aperture of the large air hole is between 0.5 and 5.0mm, and the aperture of the small air hole is between 0.1 and 2.0 mm.
Further, the transparent film is made of polyurethane material; the transparent film has a single-layer structure.
Further, the protective layer can be made of polyethylene, polyvinyl chloride, polypropylene, polyethylene terephthalate release film, silicon-coated release paper and other materials; preferably, the protective layer is made of polyethylene material.
Preferably, the silicone gel layer is made of a silicone rubber material.
Further, the antibacterial hydrogel layer can be made of acrylamide, acrylic acid, polyurethane, polyvinyl alcohol, plant extract materials and the like; preferably, the antibacterial hydrogel layer is mainly made of an acrylamide material.
Further, the adhesive layer may be an acrylic glue, a pressure sensitive adhesive, a hot melt glue, or other glue of equal tackiness.
The medical dressing provided by the utility model has the following beneficial effects: (1) The main structure layer is made of transparent or visible materials, so that the dressing is transparent, and medical staff can observe the wound condition without disassembling the dressing; (2) By adding the antibacterial agent into the hydrogel layer, the probability of infection of the wound is effectively reduced; (3) The performance of the dressing to wound exudates is greatly improved by the design of a multilayer combined structure, the liquid absorption performance of the hydrogel and the coating of the super absorbent resin layer on the hydrogel layer; (4) The wound contact pressure can be dispersed and relieved, and the pressure ulcer can be effectively prevented; (5) Residual glue is not left, and adhesion between wound tissues and dressing is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional view of a dressing according to a first embodiment of the utility model.
Fig. 2 is a schematic cross-sectional view of a dressing according to a second embodiment of the utility model.
Fig. 3 is a schematic cross-sectional view of a dressing according to a third embodiment of the utility model.
Fig. 4 is a schematic cross-sectional view of a dressing according to a fourth embodiment of the utility model.
Fig. 5 is a schematic cross-sectional view of a dressing according to a fifth embodiment of the utility model.
The drawings are marked with the following description: 1. a protective layer; 2. a silicone gel layer; 3. a vent hole; 4. an antimicrobial hydrogel layer; 5. an adhesive layer; 6. a transparent film; 7. an atmospheric hole; 8. a super absorbent resin coating; 9. support layer
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, an antibacterial medical dressing for observing the condition of a wound comprises a protective layer 1, a silicone gel layer 2 attached to the protective layer 1 on one side, an antibacterial hydrogel layer 4 attached to the other side of the silicone gel layer, an adhesive layer 5 attached to the other side of the antibacterial hydrogel layer 4, and a transparent film 6 attached to the side of the adhesive layer 5 remote from the wound area. The transparent film 6 has a single-layer structure. The protective layer 1 is a removable part. The protective layer 1 is of a three-layer structure design and comprises a laminating film in the middle and outer layers on two sides of the laminating film.
The silicone gel layer 2, the antibacterial hydrogel layer 4, the adhesive layer 5 and the transparent film 6 are all made of transparent materials, and the silicone gel layer 2 is provided with vent holes (3) with the same size.
In this embodiment, the area of the silicone gel layer 2 and the transparent film 6 is larger than the area of the antimicrobial hydrogel layer 4; the purpose of this design is to increase the fit area of the dressing so that it is more easily conformable to the wound when in use.
In this embodiment, the protective layer 1 is made of polyethylene material, the transparent film 6 is made of polyurethane material, and the adhesive layer 5 is made of acrylic adhesive.
In this embodiment, the silicone gel layer 2 is made of a silicone rubber material.
In this embodiment, the antibacterial hydrogel layer 4 is mainly made of an acrylamide hydrogel material, wherein the antibacterial agent is silver particles, and the sterilization rate can reach 99.99%. Specific test data are shown in table 1 below:
table 1:
| bacterial strain | Sterilization rate (7 days of contact) |
| Candida albicans | >99.99％ |
| Coli bacterium | >99.99％ |
| Staphylococcus aureus | >99.99％ |
| Enterococcus faecalis | >99.99％ |
| Pneumobacillus | >99.99％ |
| Pseudomonas aeruginosa | >99.99％ |
| Staphylococcus epidermidis | >99.99％ |
| Staphylococcus pyogenes | >99.99％ |
In this embodiment, the liquid absorbency of the dressing may be up to 20g/100cm 2 。
In this embodiment, the water vapor transmission rate of the dressing may reach 1000g/m 2 *24h。
In this example, the thickness of the antimicrobial hydrogel layer was 2.5mm and the water content was 30%.
In this embodiment, the support layer material used is a polyurethane film.
The present example can reduce the contact pressure by more than 60%, thereby effectively preventing and relieving the occurrence of pressure ulcers, and the specific test data are shown in table 2 below.
Table 2:
| sample of | Control (without any dressing) | Use of this practiceExamples |
| Average stress | 261.8mmHg | 141.3mmHg |
| Maximum stress | 756.3mmHg | 286.2mmHg |
| Area of force | 0.88cm 2 | 8.8cm 2 |
| Reduced contact pressure ratio | - | 62.2％ |
Example two
As shown in fig. 2, an antibacterial medical dressing for observing the condition of a wound comprises a protective layer 1, a silicone gel layer 2 attached to the protective layer 1 on one side, an antibacterial hydrogel layer 4 attached to the other side of the silicone gel layer, an adhesive layer 5 attached to the other side of the antibacterial hydrogel layer 4, and a transparent film 6 attached to the side of the adhesive layer 5 remote from the wound area. The transparent film 6 has a single-layer structure. The protective layer 1 is a removable part. The protective layer is of a double-layer film structure.
The silicone gel layer 2, the antibacterial hydrogel layer 4, the adhesive layer 5 and the transparent film 6 are all made of transparent materials.
In this embodiment, the vent holes include vent holes of different sizes: the device comprises an atmospheric pore 7 and a small pore 3, wherein the atmospheric pore 7 is arranged in a contact area of the silica gel layer and hydrogel, and the small pore 3 is arranged in an application edge area of the silica gel layer.
In this embodiment, the area of the antimicrobial hydrogel layer 4 is smaller than the areas of the silicone gel layer 2 and the transparent film 6 to increase the attachment area of the dressing so that it is more easily attached to the wound in use.
In this embodiment, the protective layer 1 is made of polyethylene material, the transparent film 6 is made of polyurethane material, and the adhesive layer 5 is made of acrylic acid.
In this embodiment, the silicone gel layer 2 is made of a silicone rubber material.
In this embodiment, the antibacterial hydrogel layer 4 is mainly made of an acrylamide hydrogel material, wherein the added antibacterial agent is benzalkonium chloride (BZK), and the sterilization rate can reach more than 90%.
In this embodiment, the liquid absorbency of the dressing may be up to 10g/100cm 2 。
In this embodiment, the water vapor transmission rate of the dressing may reach 1000g/m 2 *24h。
In this example, the thickness of the antibacterial hydrogel layer was 2.5mm and the water content was 20%. The supporting layer material is polyurethane film. This embodiment can reduce the contact pressure by more than 50%, thereby effectively preventing and relieving the generation of pressure ulcers.
Example III
As shown in fig. 3, an antibacterial medical dressing for observing the condition of a wound comprises a protective layer 1, a silicone gel layer 2 attached to the protective layer 1 on one side, an antibacterial hydrogel layer 4 attached to the other side of the silicone gel layer, an adhesive layer 5 attached to the other side of the antibacterial hydrogel layer 4, and a transparent film 6 attached to the side of the adhesive layer 5 remote from the wound area. Wherein, the side of the antibacterial hydrogel layer far away from the silica gel layer is provided with a supporting layer 9, and the side of the antibacterial hydrogel layer near the silica gel layer is coated with a super absorbent resin coating 8; the support layer 9 and the Gao Xishui resin coating 8 are both considered part of the antimicrobial hydrogel layer. The transparent film 6 has a single-layer structure. The protective layer 1 is a removable part. The protective layer is of a three-layer structure design and comprises a laminating film in the middle and outer layers on two sides of the laminating film.
The silicone gel layer 2, the antibacterial hydrogel layer 4, the adhesive layer 5 and the transparent film 6 are all made of transparent materials, and the silicone gel layer 2 is provided with vent holes (3) with the same size.
In this embodiment, the area of the antimicrobial hydrogel layer 4 is smaller than the areas of the silicone gel layer 2 and the transparent film 6 to increase the attachment area of the dressing so that it is more easily attached to the wound in use.
In this embodiment, the protective layer 1 is made of a release paper material, the transparent film 6 is made of a polyurethane material, and the adhesive layer 5 is made of a hot melt adhesive.
In this embodiment, the silicone gel layer 2 is made of a silicone rubber material.
In this embodiment, the antibacterial hydrogel layer 4 is mainly made of an acrylamide hydrogel material, wherein the supporting layer is a transparent polyurethane film, and the antibacterial agent is chlorhexidine gluconate (CHG), and the sterilization rate can reach more than 99%.
In this embodiment, the liquid absorbency of the dressing may be up to 40g/100cm 2 。
In this embodiment, the water vapor transmission rate of the dressing may reach 500g/m 2 *24h。
In this example, the thickness of the antibacterial hydrogel layer was 2.0mm and the water content was 30%. This embodiment can reduce the contact pressure by more than 50%, thereby effectively preventing and relieving the generation of pressure ulcers.
Example IV
As shown in fig. 4, an antibacterial medical dressing for observing the condition of a wound comprises a protective layer 1, a silicone gel layer 2 attached to the protective layer 1 on one side, an antibacterial hydrogel layer 4 attached to the other side of the silicone gel layer, an adhesive layer 5 attached to the other side of the antibacterial hydrogel layer 4, and a transparent film 6 attached to the side of the adhesive layer 5 remote from the wound area. Wherein the antibacterial hydrogel layer is provided with a support layer 9 at a side remote from the silicone gel layer, the support layer 9 being regarded as a part of the antibacterial hydrogel layer. The transparent film 6 has a single-layer structure. The protective layer 1 is a removable part. The protective layer 1 is of a three-layer structure design and comprises a laminating film in the middle and outer layers on two sides of the laminating film.
The silicone gel layer 2, the antibacterial hydrogel layer 4, the adhesive layer 5 and the transparent film 6 are all made of transparent materials, and the silicone gel layer 2 is provided with vent holes (3) with the same size.
In this embodiment, the area of the antimicrobial hydrogel layer 4 is smaller than the areas of the silicone gel layer 2 and the transparent film 6 to increase the attachment area of the dressing so that it is more easily attached to the wound in use.
In this embodiment, the protective layer 1 is made of polypropylene, the transparent film 6 is made of polyurethane, and the adhesive layer is made of acrylic.
In this embodiment, the silicone gel layer 2 is made of a silicone rubber material.
In this embodiment, the antibacterial hydrogel layer 4 is mainly made of an acrylamide hydrogel material, wherein the supporting layer is a semitransparent woven net film, the antibacterial agent is polyhexamethylene chlorohydrin (PHMB), and after the hydrogel is formed, the side far from the adhesive layer is coated, and the sterilization rate can reach more than 99.9%.
In this embodiment, the liquid absorbency of the dressing may be up to 30g/100cm 2 。
In this embodiment, the water vapor transmission rate of the dressing may reach 1000g/m 2 *24h。
In this example, the antibacterial hydrogel layer had a thickness of 5.0mm and a water content of 10%. This embodiment can reduce the contact pressure by more than 50%, thereby effectively preventing and relieving the generation of pressure ulcers.
Example five
As shown in fig. 5, an antibacterial medical dressing for observing the condition of a wound comprises a protective layer 1, a silicone gel layer 2 attached to the protective layer 1 on one side, an antibacterial hydrogel layer 4 attached to the other side of the silicone gel layer, an adhesive layer 5 attached to the other side of the antibacterial hydrogel layer 4, and a transparent film 6 attached to the side of the adhesive layer 5 remote from the wound area. Wherein the antibacterial hydrogel layer is provided with a support layer 9 at a side remote from the silicone gel layer, the support layer 9 being regarded as a part of the antibacterial hydrogel layer. The transparent film 6 has a single-layer structure. The protective layer 1 is a removable part. The protective layer is of a double-layer film structure.
The silicone gel layer 2, the antibacterial hydrogel layer 4, the adhesive layer 5 and the transparent film 6 are all made of transparent materials.
In this embodiment, the vent holes include vent holes of different sizes: the device comprises an atmospheric pore 7 and a small pore 3, wherein the atmospheric pore 7 is arranged in a contact area of the silica gel layer and hydrogel, and the small pore 3 is arranged in an application edge area of the silica gel layer. The vent holes (3) with different sizes are arranged on the valve body 2. The large-size holes are arranged in the wound contact area, so that the capacity of the hydrogel layer for absorbing wound seepage and the air permeability are ensured; small-size holes are formed in the edge area to increase application performance, and difficulty in edge lifting and adhesion in the use process is avoided, so that the use comfort of a user is improved.
In this embodiment, the area of the antimicrobial hydrogel layer 4 is smaller than the areas of the silicone gel layer 2 and the transparent film 6 to increase the attachment area of the dressing so that it is more easily attached to the wound in use.
In this embodiment, the protective layer 1 is made of polypropylene, the transparent film 6 is made of polyurethane, and the adhesive layer is made of acrylic.
In this embodiment, the silicone gel layer 2 is made of a silicone rubber material.
In this embodiment, the antibacterial hydrogel layer 4 is mainly made of an acrylamide hydrogel material, wherein the supporting layer is a semitransparent non-woven fabric, the antibacterial agent is polyhexamethylene chlorohydrin (PHMB), and after the hydrogel is formed, the side far away from the adhesive layer is coated, and the sterilization rate can reach more than 99.9%.
In this embodiment, the liquid absorbency of the dressing may be up to 5g/100cm 2 。
In this embodiment, the water vapor transmission rate of the dressing may reach 300g/m 2 *24h。
In this example, the antibacterial hydrogel layer had a thickness of 0.8mm and a water content of 90%. This embodiment can reduce the contact pressure by more than 40%, thereby effectively preventing and relieving the generation of pressure ulcers.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (15)
1. An antibacterial medical dressing capable of observing the condition of a wound is characterized by comprising a protective layer, a silica gel layer, an antibacterial hydrogel layer, an adhesive layer and a transparent film, wherein one surface of the transparent film is attached to the surface of the adhesive layer, which is far away from the wound area; the protective layer is a removable part, and one surface of the protective layer is attached to one surface of the silica gel layer; the silicone gel layer, the antibacterial hydrogel layer, the adhesive layer and the transparent film are made of transparent or visible materials; the antibacterial hydrogel layer is arranged between the other surface of the silicone gel layer and the adhesive layer; the silica gel layer is provided with a vent hole; the antibacterial hydrogel layer is connected with the protective layer through a vent hole on the silica gel layer, and the antibacterial hydrogel layer is contacted with the wound area through the vent hole on the silica gel layer after the protective layer is uncovered; the antimicrobial hydrogel layer is capable of absorbing exudates from a wound; the antibacterial hydrogel layer is an elastic structure layer containing an antibacterial agent, and can deform to generate elasticity after being pressed so as to disperse and relieve the pressure of a wound.
2. The antimicrobial medical dressing according to claim 1, wherein the protective layer is made of polyethylene, polyvinyl chloride, polypropylene, polyethylene terephthalate release film or silicone release paper.
3. The antimicrobial medical dressing according to claim 1, wherein the ventilation holes in the silicone gel layer are the same or different sizes; the atmospheric pores are arranged in the contact area of the silica gel layer and the antibacterial hydrogel layer; the small air holes are arranged in the application edge area of the silica gel layer; the pore diameter of the large pores is between 0.5 and 5.0mm, and the pore diameter of the small pores is between 0.1 and 2.0 mm.
4. The antimicrobial medical dressing of claim 1, wherein the silicone gel layer is made of a silicone rubber material.
5. The antimicrobial medical dressing according to claim 1, wherein the thickness of the antimicrobial hydrogel layer is between 0.8-5mm and the moisture content is between 10-90%.
6. The antimicrobial medical dressing of claim 1, wherein the antimicrobial hydrogel layer comprises a polymer having liquid absorbency.
7. The antimicrobial medical dressing of claim 1, wherein the antimicrobial hydrogel layer is made of acrylamide, acrylic acid, polyurethane, polyvinyl alcohol, or a plant-extracted material.
8. The antimicrobial medical dressing of claim 1, wherein the antimicrobial hydrogel layer is coated with a layer of superabsorbent resin.
9. The antimicrobial medical dressing according to claim 1, wherein the antimicrobial hydrogel layer is provided with a support layer on a side remote from the silicone gel layer; the supporting layer is a transparent polyurethane film, a non-woven fabric, a woven or knitted net film; the supporting layer is transparent or semitransparent and can support hydrogel curing materials.
10. The antimicrobial medical dressing according to claim 1, wherein the adhesive layer is made of a biocompatible material and is used for adhering the antimicrobial hydrogel layer and the transparent film.
11. The antimicrobial medical dressing of claim 1, wherein the adhesive layer is an acrylic adhesive, a pressure sensitive adhesive, a hot melt adhesive, or a glue of comparable tackiness.
12. The antimicrobial medical dressing according to claim 1, wherein the transparent film is made of polyurethane material; the transparent film has a single-layer structure.
13. The antimicrobial medical dressing according to claim 1, wherein the antimicrobial agent is added by a surface coating after hydrogel formation or directly during hydrogel formation.
14. The antimicrobial medical dressing according to claim 1, wherein the liquid absorbency of the dressing is not less than 5g/100cm2, the water vapor transmittance is not less than 300g/m2 x 24h, and the sterilization rate is between 90% and 99.9999%.
15. An antimicrobial medical dressing according to claim 1, wherein the dressing is shaped as a heart, circle, oval, triangle or rectangle depending on the location of the wound in use.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321403263.8U CN220608757U (en) | 2023-06-05 | 2023-06-05 | Antibacterial medical dressing capable of observing wound condition |
| PCT/US2023/033473 WO2024064336A1 (en) | 2022-09-23 | 2023-09-22 | Transparent dressing with hydrogel layer |
| US18/371,682 US20240016974A1 (en) | 2021-04-08 | 2023-09-22 | Transparent dressing with hydrogel layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321403263.8U CN220608757U (en) | 2023-06-05 | 2023-06-05 | Antibacterial medical dressing capable of observing wound condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220608757U true CN220608757U (en) | 2024-03-19 |
Family
ID=90219383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321403263.8U Active CN220608757U (en) | 2021-04-08 | 2023-06-05 | Antibacterial medical dressing capable of observing wound condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220608757U (en) |
-
2023
- 2023-06-05 CN CN202321403263.8U patent/CN220608757U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10925773B2 (en) | Wound care article having super-absorbent fibers and super-absorbent particles | |
| US20180064843A1 (en) | Wound dressing | |
| US10470933B2 (en) | Wound care article having a substantially polygonal or ellipsoid main surface and at least one recess arranged on one side | |
| CN110913811A (en) | Wound dressing with odor absorption and increased moisture vapor transmission | |
| Agarwal et al. | Polymeric materials for chronic wound and burn dressings | |
| JP2004520096A (en) | Hydrogel wound dressing | |
| GB2531344A (en) | Composite wound dressing | |
| Joshi et al. | Composite dressings for wound care | |
| JPH06501864A (en) | wound dressing | |
| CN207575472U (en) | A kind of antibacterial anti hemorrhagic combine dressing | |
| GB2399289A (en) | Hydrogel wound dressing | |
| CN210020501U (en) | Antibacterial alginate dressing | |
| CN220608757U (en) | Antibacterial medical dressing capable of observing wound condition | |
| CN214679180U (en) | Functional dressing with alginate | |
| CN212234953U (en) | Silica gel is applied ointment or plaster | |
| US20240016974A1 (en) | Transparent dressing with hydrogel layer | |
| CN211797228U (en) | Medical dressing pad pasting | |
| CN201578446U (en) | Alginate foam dressing | |
| Worley | So, what do I put on this wound? Making sense of the wound dressing puzzle: part II | |
| WO2024064336A1 (en) | Transparent dressing with hydrogel layer | |
| CN217448233U (en) | Medical carbon fiber dressing for treating pressure sores | |
| CN220327725U (en) | Multilayer composite dressing | |
| CN211049862U (en) | Postoperative dressing | |
| Lau | What dressing: New wound dressings | |
| Holloway et al. | Dressings and Devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |